void TimelineView::updateTimeline(bool updateStartX) { if (!m_delegate) return; if (!m_ranges.isArray()) return; int length = m_ranges.property("length").toInt32(); qreal startValue = m_ranges.property(0).property("start").toNumber(); qreal endValue = m_ranges.property(length-1).property("start").toNumber() + m_ranges.property(length-1).property("duration").toNumber(); qreal totalRange = endValue - startValue; qreal window = m_endTime - m_startTime; if (window == 0) //### return; qreal spacing = width() / window; qreal oldtw = m_totalWidth; m_totalWidth = totalRange * spacing; // Find region samples int minsample = 0; int maxsample = 0; for (int i = 0; i < length; ++i) { if (m_ends.at(i) >= m_startTime) break; minsample = i; } for (int i = minsample + 1; i < length; ++i) { maxsample = i; if (m_starts.at(i) > m_endTime) break; } //### overkill (if we can expose whether or not data is nested) for (int i = maxsample + 1; i < length; ++i) { if (m_starts.at(i) < m_endTime) maxsample = i; } //qDebug() << maxsample - minsample; if (updateStartX) { qreal oldStartX = m_startX; m_startX = qRound(m_startTime * spacing); if (m_startX != oldStartX) { emit startXChanged(m_startX); } } //### emitting this before startXChanged was causing issues if (m_totalWidth != oldtw) emit totalWidthChanged(m_totalWidth); //clear items no longer in view while (prevMin < minsample) { delete m_items.take(prevMin); ++prevMin; } while (prevMax > maxsample) { delete m_items.take(prevMax); --prevMax; } // Show items int z = 0; for (int i = maxsample-1; i >= minsample; --i) { QDeclarativeItem *item = 0; item = m_items.value(i); bool creating = false; if (!item) { QDeclarativeContext *ctxt = new QDeclarativeContext(qmlContext(this)); item = qobject_cast<QDeclarativeItem*>(m_delegate->beginCreate(ctxt)); m_items.insert(i, item); creating = true; int type = m_ranges.property(i).property("type").toNumber(); ctxt->setParent(item); //### QDeclarative_setParent_noEvent(ctxt, item); instead? ctxt->setContextProperty("duration", qMax(qRound(m_ranges.property(i).property("duration").toNumber()/qreal(1000)),1)); ctxt->setContextProperty("fileName", m_ranges.property(i).property("fileName").toString()); ctxt->setContextProperty("line", m_ranges.property(i).property("line").toNumber()); QString label; QVariantList list = m_ranges.property(i).property("label").toVariant().value<QVariantList>(); for (int i = 0; i < list.size(); ++i) { if (i > 0) label += QLatin1Char('\n'); QString sub = list.at(i).toString(); //### only do rewrite for bindings... if (type == 3) { //### don't construct in loop QRegExp rewrite("\\(function \\$(\\w+)\\(\\) \\{ return (.+) \\}\\)"); bool match = rewrite.exactMatch(sub); if (match) sub = rewrite.cap(1) + ": " + rewrite.cap(2); } label += sub; } ctxt->setContextProperty("label", label); ctxt->setContextProperty("type", type); item->setParentItem(this); } if (item) { item->setX(m_starts.at(i)*spacing); item->setWidth((m_ends.at(i)-m_starts.at(i)) * spacing); item->setZValue(++z); } if (creating) m_delegate->completeCreate(); } prevMin = minsample; prevMax = maxsample; }